| Official Name: | Kilby Butte Colony, Montana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Montana#USA |
| Pushpin Label: | Kilby Butte Colony |
| Coordinates: | 46.4761°N -108.3597°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Musselshell |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.11 |
| Area Land Sq Mi: | 0.11 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 0.28 |
| Area Land Km2: | 0.28 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 0 |
| Population Density Sq Mi: | 0.00 |
| Population Density Km2: | 0.00 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3120 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 59072 (Roundup) |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-40680 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806654 |
Kilby Butte Colony is a Hutterite community[3] and census-designated place (CDP) in Musselshell County, Montana, United States. It is in the center of the county, on the south side of U.S. Route 12, 9miles east of Roundup, the county seat. It is on the north side of the Musselshell River, an east-flowing tributary of the Missouri River.
The community was first listed as a CDP prior to the 2020 census. At the 2020 census, the population was recorded as zero.[2]
According to the U.S. Census Bureau, the area of the CDP is 0.11sqmi, all land.[1] The unincorporated community of Gage is to the west on US 12.